... ,19 300/19,19 400/19,19 200/24,24 300/19,19 400/24,24 500/24,24 400/29,29 etc (1)item:Column ... ,distilling ,vigreux(2)joints:14# 19# 24# 29#(3)all sizes ... :200/14,14 200/19,19 300/19,19 400/19,19 200/24,24 300/19,19 400/24,24 ... 500/24,24 ...